From f035cc474ff1ae2b0ef50536265cd8d82391d84a Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Tue, 26 Oct 1993 20:58:54 +0000 Subject: [PATCH] * elfcode.h (assign_file_position_for_section): Align sh_offset to sh_addralign (this is what UnixWare does, and it shouldn't hurt). --- bfd/ChangeLog | 5 ++++ bfd/elfcode.h | 73 +++++++++++++++++++++++++-------------------------- 2 files changed, 41 insertions(+), 37 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index c5b3fc99f1e..74025e4aadc 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,8 @@ +Tue Oct 26 16:53:12 1993 Ian Lance Taylor (ian@tweedledumb.cygnus.com) + + * elfcode.h (assign_file_position_for_section): Align sh_offset to + sh_addralign (this is what UnixWare does, and it shouldn't hurt). + Tue Oct 26 10:16:54 1993 Ken Raeburn (raeburn@cygnus.com) From Jeff Law and Pete Hoogenboom at Utah: diff --git a/bfd/elfcode.h b/bfd/elfcode.h index 76fb3691104..39f8cdba73e 100644 --- a/bfd/elfcode.h +++ b/bfd/elfcode.h @@ -99,18 +99,19 @@ PTR alloca (); #define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel) #define elf_new_section_hook NAME(bfd_elf,new_section_hook) #define write_relocs NAME(bfd_elf,_write_relocs) +#define elf_find_section NAME(bfd_elf,find_section) #if ARCH_SIZE == 64 #define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y) #define ELF_R_SYM(X) ELF64_R_SYM(X) #define ELFCLASS ELFCLASS64 -#define EALIGN 8 +#define FILE_ALIGN 8 #endif #if ARCH_SIZE == 32 #define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y) #define ELF_R_SYM(X) ELF32_R_SYM(X) #define ELFCLASS ELFCLASS32 -#define EALIGN 4 +#define FILE_ALIGN 4 #endif static int shstrtab_length_fixed; @@ -589,6 +590,7 @@ DEFUN (bfd_section_from_shdr, (abfd, shindex), newsect->_raw_size = hdr->sh_size; newsect->alignment_power = 0; newsect->vma = 0; + newsect->filepos = hdr->sh_offset; if (hdr->sh_flags & SHF_ALLOC) newsect->flags |= SEC_ALLOC|SEC_LOAD; @@ -1038,8 +1040,6 @@ DEFUN (elf_make_sections, (abfd, asect, obj), { /* most of what is in bfd_shdr_from_section goes in here... */ /* and all of these sections generate at *least* one ELF section. */ - int idx; - Elf_Internal_Shdr *this_hdr; this_hdr = &elf_section_data (asect)->this_hdr; @@ -1051,8 +1051,6 @@ DEFUN (elf_make_sections, (abfd, asect, obj), { /* emit a reloc section, and thus strtab and symtab... */ Elf_Internal_Shdr *rela_hdr; - Elf_External_Rela *outbound_relocas; - Elf_External_Rel *outbound_relocs; int use_rela_p = get_elf_backend_data (abfd)->use_rela_p; rela_hdr = &elf_section_data (asect)->rel_hdr; @@ -1083,6 +1081,13 @@ DEFUN (elf_make_sections, (abfd, asect, obj), /* @@ Do something with sh_type? */ } } + else + { + /* If this section is not part of the program image during + execution, leave the address fields at 0. */ + this_hdr->sh_addr = 0; + asect->vma = 0; + } if (!(asect->flags & SEC_READONLY)) this_hdr->sh_flags |= SHF_WRITE; @@ -1243,14 +1248,6 @@ DEFUN (elf_fake_sections, (abfd, asect, obj), else this_hdr->sh_type = SHT_PROGBITS; - /* Now, check for processor-specific section types. */ - { - struct elf_backend_data *bed = get_elf_backend_data (abfd); - - if (bed->elf_backend_fake_sections) - (*bed->elf_backend_fake_sections) (abfd, this_hdr, asect); - } - this_hdr->sh_flags = 0; this_hdr->sh_addr = 0; this_hdr->sh_size = 0; @@ -1260,10 +1257,17 @@ DEFUN (elf_fake_sections, (abfd, asect, obj), this_hdr->sh_offset = 0; this_hdr->size = 0; + /* Now, check for processor-specific section types. */ + { + struct elf_backend_data *bed = get_elf_backend_data (abfd); + + if (bed->elf_backend_fake_sections) + (*bed->elf_backend_fake_sections) (abfd, this_hdr, asect); + } + { /* Emit a strtab and symtab, and possibly a reloc section. */ Elf_Internal_Shdr *rela_hdr; - Elf_Internal_Shdr *symstrtab_hdr; /* Note that only one symtab is used, so just remember it for now. */ @@ -1441,11 +1445,6 @@ static void assign_file_positions_except_relocs (); static boolean DEFUN (elf_compute_section_file_positions, (abfd), bfd * abfd) { - Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ - Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */ - struct strtab *shstrtab; - int count, maxsections; - bfd_map_over_sections (abfd, elf_fake_sections, 0); assign_section_numbers (abfd); @@ -1561,7 +1560,13 @@ assign_file_position_for_section (i_shdrp, offset) Elf_Internal_Shdr *i_shdrp; file_ptr offset; { - i_shdrp->sh_offset = offset; + int align; + + if (i_shdrp->sh_addralign != 0) + align = i_shdrp->sh_addralign; + else + align = 1; + i_shdrp->sh_offset = offset = BFD_ALIGN (offset, align); if (i_shdrp->sh_type != SHT_NOBITS) offset += i_shdrp->sh_size; return offset; @@ -1571,7 +1576,7 @@ static INLINE file_ptr align_file_position (off) file_ptr off; { - return (off + EALIGN - 1) & ~(EALIGN - 1); + return (off + FILE_ALIGN - 1) & ~(FILE_ALIGN - 1); } static INLINE file_ptr @@ -1879,14 +1884,10 @@ static boolean prep_headers (abfd) bfd *abfd; { - Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ - Elf_External_Shdr *x_shdrp; /* Section header table, external form */ Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ - int count; - int scnt; struct strtab *shstrtab; i_ehdrp = elf_elfheader (abfd); @@ -1983,15 +1984,13 @@ prep_headers (abfd) ".strtab"); elf_tdata (abfd)->shstrtab_hdr.sh_name = bfd_add_to_strtab (abfd, shstrtab, ".shstrtab"); - + return true; } static void swap_out_syms (abfd) bfd *abfd; { - struct strtab *shstrtab = elf_shstrtab (abfd); - elf_map_symbols (abfd); /* Dump out the symtabs. */ @@ -2150,12 +2149,9 @@ write_shdrs_and_ehdr (abfd) { Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ - Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ Elf_External_Shdr *x_shdrp; /* Section header table, external form */ Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ - int count; - int scnt; struct strtab *shstrtab; i_ehdrp = elf_elfheader (abfd); @@ -2347,8 +2343,14 @@ DEFUN (elf_section_from_bfd_section, (abfd, asect), struct elf_backend_data *bed = get_elf_backend_data (abfd); if (bed->elf_backend_section_from_bfd_section) - if ((*bed->elf_backend_section_from_bfd_section) (abfd, hdr, asect)) - return index; + { + int retval; + + retval = index; + if ((*bed->elf_backend_section_from_bfd_section) + (abfd, hdr, asect, &retval)) + return retval; + } } break; } @@ -2363,11 +2365,8 @@ DEFUN (elf_symbol_from_bfd_symbol, (abfd, asym_ptr_ptr), struct symbol_cache_entry **asym_ptr_ptr) { struct symbol_cache_entry *asym_ptr = *asym_ptr_ptr; - CONST char *name = asym_ptr->name; int idx; - int symcount = bfd_get_symcount (abfd); flagword flags = asym_ptr->flags; - asymbol **syms = bfd_get_outsymbols (abfd); /* When gas creates relocations against local labels, it creates its own symbol for the section, but does put the symbol into the -- 2.30.2